What 980 owners told NHTSA about the 2018 Tesla Model 3

It showed message that emergency brakes not available. It was related to wire hardness inside the trunk lid. I had to get it replaced. Tesla did not cover it.

NHTSA ODI 11740870

Safety Issue: Defective interior cabin camera causes Tesla Full Self-Driving (FSD) to disengage abruptly and without adequate warning at freeway speeds. I am a [XXX] driver. I purchased FSD capability with this vehicle in December 2018. In October 2025, I had the FSD hardware upgrade (HW2.5 to HW3) installed at Tesla's Encinitas, CA service center (B.A.R. License [XXX] ). Within days, FSD would became completely unusable due to a recurring "Cabin camera unavailable — schedule service" alert that instantly disengages the system. The disengagement occurs on the freeway at highway speed, without meaningful advance warning. As a [XXX] driver, the sudden loud alarm and loss of assisted driving is genuinely alarming — it is not immediately clear in the moment whether the vehicle has lost power or experienced a critical failure. This is exactly the kind of dangerous situation driver assistance systems should prevent, not cause. Tesla's own diagnostic confirmed the defect (Diagnostic Invoice No. XXX, November 27, 2025, Encinitas service center): "Cabin camera unavailable" alert verified Intermittent stream exit faults detected in the selfie/cabin camera Low-voltage circuit and wiring checks were normal — ruling out wiring Conclusion: fault is within the camera module itself; technician recommended replacement The defect is FSD-specific. The cabin camera works correctly for Sentry Mode, live security viewing, and all normal driving. It fails exclusively when FSD is engaged and demands sustained driver monitoring. The camera housing also becomes extremely hot to the touch during FSD use, consistent with reports from other 2018 Model 3 owners describing identical symptoms after their HW3 retrofits. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11735378

Pantom braking happening frequently after latest software update. FSD version 12.6.4 Software version 2026.8.6 Happening on single lane road.

NHTSA ODI 11730685

I am submitting this report to the National Highway Traffic Safety Administration regarding a recurring safety issue with my 2018 Tesla Model 3 involving unintended “phantom braking.” On multiple occasions, my vehicle has abruptly decelerated without any apparent obstacle or hazard present. These incidents have primarily occurred while using driver assistance features such as Autopilot and Traffic-Aware Cruise Control on highways and well-marked roads under normal driving conditions (clear weather, dry pavement, consistent traffic flow). The braking events are sudden and significant, creating a serious safety risk—particularly when other vehicles are following closely. In several instances, the deceleration was forceful enough that I believed a rear-end collision was likely. There were no visible triggers such as overpasses, shadows, vehicles merging, or roadside objects that would reasonably justify the system’s response. Below are details to assist your investigation: •Driver Assistance Features Active: Just cruise control, not auto pilot on these occasions •Weather/Road Conditions: Clear and dry •Frequency of Occurrence: This is an ongoing problem that has occurred dozens of times in the past few years. The March 30th incidents were only the most recent ones. •Any Warning Messages or Alerts: No This behavior appears unpredictable and difficult to anticipate or mitigate, increasing the risk of a crash. Given the potential safety implications, I respectfully request that NHTSA review this issue to determine whether it reflects a broader defect affecting other vehicles. Thank you for your attention to this matter.

NHTSA ODI 11728570

I was driving with Full Self Driving active on Sunday morning and my car came to a complete stop at a red light. Once the traffic cleared the car drove right through the red light and I was given a traffic citation by a police officer. The car did wait until there were no other cars present so I don't believe I was in any real danger but the fact that the car went through a red light while on full self driving violates the rules of the road which as we know is illegal. I have a video from my dash cam but this form doesn't appear to allow for video uploads.

NHTSA ODI 11726579

There is no checkbox for Full Self Driving (Supervised): 3 times in the last 4 weeks, my Tesla has become impatient at long red lights and lurches out into the intersection. I am very concerned because one of those times (first time) it did not creep forward, but just took off thru the red light. I had to accelerate thru to get ahead of those cars that still had the green light. Fortunately, nothing untoward happened, except scaring me! The other two times, I recognized what was happening and put on the brakes and removed from FSD mode. I have complained to Tesla and am asking for them to verify my FSD is up to date and this issue will be fixed. Needless to say, I have stopped using the FSD (Supervised) until this is all addressed.

NHTSA ODI 11718114

Description of the Defect: While driving with Full Self-Driving (FSD) engaged, the vehicle's primary computer shuts down and reboots, causing a sudden loss of all safety features, including Blind Spot Monitoring, Lane Departure Warning, Forward Collision Warning, and the driving visualization. The cameras go black while the vehicle is in motion. The Trigger: The failure is triggered by high electrical load. If the Cabin Heater (HVAC) and Seat Heaters are active while FSD is fully computing, the 12V power supply to the computer drops below critical voltage, causing a "Turbo A" processor lockup and system crash. Evidence of Defect: Service Center diagnostics confirmed the specific error code APS_w169_TurboA_SCS_LKUP (Computer Crash) occurred at the exact same timestamp as VCLEFT_a302_blowerGeneralFault (HVAC Blower Failure). This proves a common-mode voltage drop affecting multiple critical systems simultaneously. Manufacturer Response: The manufacturer (Tesla) acknowledged the logs but refused to inspect the wiring harness or ground connections, instead recommending a replacement of the computer unit. However, the failure can be mitigated by unplugging external cameras to reduce load, proving the root cause is an insufficient power delivery design (Wiring/Grounding) rather than a component failure. The computer is running at full load with the newest FSD software and it can no longer keep up with additional loads. Safety Risk: This defect causes a sudden, uncommanded loss of driver assistance and situational awareness tools (cameras/visualization) while the vehicle is maneuvering in traffic. The vehicle’s power distribution system appears insufficient to support the electrical load of the software (FSD) and the hardware (HVAC) simultaneously.

NHTSA ODI 11716395

Repeatedly and randomly, with cruise control (not FSD) engaged, the car would brake, sometimes aggressively. The last time, it braked so hard the tires or brakes squealed and the car swerved slightly before I was able to regain control. This was on the freeway (in Colorado, if I remember correctly) while I was cruising at 70 or 75 MPH. I decided that that was the last time I would use cruise control; it was just not safe. I had an appointment on October 22 to take the car in for service. But then a friend told me this was called "phantom braking" and that there was no fix. A friend suggested that I contact the NHTSA.

NHTSA ODI 11695523

I believe my car should be included in the recall for trunk harness recall. My alert and issue is the rear camera being off due to rear trunk ruining the wiring harness that has affected many cars. This is already a recall but I believe my car missed being involved.

NHTSA ODI 11690203

Main incident: Time: 2025-08-28 ~12:41 PM PST What happened: After searching for a parking space, the driver was preparing to reverse into the spot, the driver pressed up the stalk to shift the gear into reverse, a sound was heard and something showed up on the screen, the vehicle once again started accelerating and running forward suddenly and sharply (3 mph to 28 mph in 3 secs), driver tried to steer the vehicle away from cars and buildings to minimize danger, the car rushed onto a concrete curb, hit one blue Tesla, then hit the side of a concrete utility pole, and ran over a plant and last crashed into the chain-link french before it finally stops Injuries: * Spine pain for one passenger Damages: ** All tires blown out, tire falls off ** Severe damages throughout the vehicle body * One Tesla parked on the parking lot was severely damaged * The utility pole's base box was scraped and deformed * One plant was knocked down Similar case 3 few mins ago: Time: 2025-08-28 ~12:38 PM PST What happened: The driver entered a oneway parking lot, but found no available spot and was trying to back up, the vehicle suddenly accelerated on its own. The driver performed an emergency brake and stopped the vehicle. At the time the vehicle stopped, it was only about 20 inches away from two cars in front of it Injuries and damages: None What component or system failed or malfunctioned, and is it available for inspection upon request? Malfunctioning of the electronic control or braking system leading to abnormal acceleration Conflicting gear shifting and autopilot engagement design The right stalk is used to both shift gears and engage autopilot features, this design makes it very easy for the system to confuse the two actions Autopilot feature safety issues Autopilot features (whether its FSD or cruise control) should not be allowed to initiate abrupt acceleration to a dangerous speed in a low speed area (for example parking lot) Insurance claim filed, number: 25-647243342

NHTSA ODI 11684449

Too fast and too close to stop sign to red light or other cars while in Full Self Drive (supervised).I had to disable it to avoid risks of accident.Even using Chilly Mode.

NHTSA ODI 11679549

Backup camera recall was not fixed properly or the new parts have same issue. As a result the backup camera was not functioning. When the camera is not functioning the autopilot system drives aggressively, speeding up to the max set speed when it is not safe to do so with current traffic conditions. Had to disengage autopilot otherwise it would have crashed. Also I received an alert that the emergency breaking system was not functional. When reversing could not use backup camera.

NHTSA ODI 11676225

October 12, 2024. I was using the Tesla on autopilot. I was in the far right lane and the freeway was curving to the left. The car was following in the lanes, but then all of a sudden it stopped following the freeway and drove into the right guardrail. There were no alerts by the car. It did not warn to take over the vehicle or attempt to avoid the collision. The car drove directly into the guardrail without warning and was totalled.

NHTSA ODI 11646940

Car performed automatic emergency braking on driver's resumption of forward travel from a full stop when traffic light went from red to green. No oncoming vehicles or obstacles were present. Weather was clear and sunny and road was dry.

NHTSA ODI 11644009

On December 24, 2024 I was driving on Freeway 5 South and all of the sudden my vehicle came to an abrupt breaking without any reason. The traffic ahead of me was of normal traffic. This abrupt breaking happened twice within 5 minutes of time span. I have notified Tesla Service Center and the service center gave me a quote of $137.50 for diagnostic and to schedule the service. I felt that this issues should be taken care of by Tesla with no charge to me. This is a safety issue. I have experienced the abrupt breaking issues with my vehicle on many occasions since I own the vehicle in 2018. Each time I was told there's no problem with the vehicle when I notified Tesla Service Center.

NHTSA ODI 11632783

Two incidents while testing the most recent version of Tesla's "Full Self-Driving": 1. While driving at less than 25mph in a residential neighborhood, using the "Full Self-Driving" mode, the car was entirely unable to detect either heavy steel plates in the road (being used to cover road work) or significant potholes in the area near the plates. 2. While driving on H1 (a federal "interstate" highway) on Oahu, at approximately 55mph, using the Tesla's "Full Self-Driving", the car inexplicably slammed on the brakes. There was absolutely nothing visibly in front of the car for at least 200 yards. The car behind me had to swerve to avoid rear-ending my vehicle.

NHTSA ODI 11627100

I have a 2018 Tesla Model 3 that was involved in an accident on 10/12/2024. It has Enhanced Autopilot, which was the most advanced version of self driving when I bought the car. It was engaged in "Navigate on Autopilot" on the freeway. The car was following the freeway as it veered to the left, but then it stopped following the lines and crashed into the side of the freeway. The result of the accident was a total loss on the vehicle. I had shoulder and neck pain that have not required serious medical attention, but it was almost a week of discomfort and difficulty sleeping. My insurance company has deemed the vehicle a total loss and I will have to get a replacement. There were no warning alerts and the vehicle did not recognize that it was leaving the freeway lines. I was not going over the speed limit. The car did not prompt me to take over the vehicle because of danger. It just went straight towards the freeway guardrail. The car is not drivable due to the damage it sustained.

NHTSA ODI 11622010

I was driving (~42 m/h) my Model 3 Tesla on a freeway and the traffic in front of me suddenly slowed down. The driver in front of me (she was a new driver with a new car) braked hard and came to a complete stop even though the traffic in front of her was moving. I ended up colliding with her as a result. I would have expected the Tesla Forward collision system or the Automatic Emergency Braking system to have activated and prevented this crash. Further, it seems Tesla brakes behave differently when it is fully charged as the engine braking does not engage. In fact the car seems to accelerate instead. If the Tesla Forward collision system and the AEB do not work and prevent such accidents, what is the point of having these systems?

NHTSA ODI 11621424

The MCU in my 2018 Tesla Model 3 failed after a software update, rendering several key safety features inoperable, including the car’s cameras and Autopilot functions. The vehicle currently has 16,600 miles and had previously received an MCU replacement in 2022. This most recent failure occurred during a firmware update, which got stuck at 50%. The Tesla Service Center confirmed that the MCU needs replacement again, but I was not given clear diagnostic logs or evidence of a pre-existing hardware issue. Due to this failure, the rearview camera, blind spot monitoring, and Autopilot features are no longer operational, which directly impacts the safety of driving the vehicle. These features are critical for safe operation and are standard in ensuring driver assistance, situational awareness, and accident avoidance. The issue has been inspected by the Tesla Service Center, and they proposed replacing the MCU at a significant cost, though no prior warning signs or messages appeared before the failure during the update.

NHTSA ODI 11614871

On 9/6/2024 I was driving on I-10 E going about 70 mph in the left lane. I had engaged the cruise control but not the Autopilot because I’ve had dangerous experiences with the Autopilot phantom breaking and misinterpreting cracks in the road as lane markers and dangerously changing lanes. So even though Inoaid thousands of dollars for Autopilot I never use it. So I was driving approaching a big rig in the lane to the left of mine and the sun was low in the sky casting a shadow on the road. The car thought the shadow was a car and slammed on the breaks and almost came to a complete stop until I pressed on the breaks to release the cruise control. We are very lucky the car behind us didn’t hit us. The car behind us almost hit us and my passenger and I both sprained our necks. The same exact thing happened 5 minutes later. After that I am too scared to use cruise control which is very inconvenient when on a road trip. My car is a 2018 Tesla Model 3 that is equipped with LIDAR radar when I bought it, however Tesla turned this feature off awhile back. I never had issues with cruise control when the LIDAR was still enabled. I am very angry that a carmaker can turn off a safety feature that I paid for without my consent. I would have bought a different electric car if I had know I’d have to go back in time to the 1990’s before cruise control was invented. Most cars use some kind of radar for their cruise control systems and this seems to much safer. There are many, many complaints on line of other Tesla drivers having lots os problems with phantom braking. This is an important safety issue that needs to be addressed immediately.

NHTSA ODI 11613360

I recently took my car in for a recall for the trunk wiring harness and have never had any major issues since I purchased it in 2018. Since replacing the recalled harness, I’m starting to receive several alerts from my driver assistance system (emergency brakes, camera failure). I called a service tech who mentioned there’s either a failed camera or a failed wiring harness. Looking online, I was shocked to see hundreds of other owners with a 2018 model 3 also experiencing the same issue in 2024 (assuming after they replaced the recently recalled harness). I strongly believe that these two issues are related and that the camera should be replaced alongside the wiring harness. Several people on this forum have been quoted hundreds or thousands from tesla to replace the harness (including myself) and are taking matters into their own hands by replacing with after market parts. This is a serious safety issue since the cameras control all self driving functionality. I’m shocked that it’s not already been addressed through a recall! The first time my system had gone out while on Autopilot, the car flashed and sirened and asked that I take over. Since then all my driver assistance features including my rear camera are no longer functional. Please see this forum where several others are experiencing the same issue on their 2018 Model 3s [XXX] Attached are error messages from my car and screenshots from the forum above where people have described the DIY fix and the costs quoted by Tesla. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11609736

While driving on the highway with FSD on, the car severely amalfunctioned with sudden deceleration at 4 separate ocassions. At 68 mph when changing lanes, the car suddenly decelerated. There were several cars behind us and it could have been a major multi car collision. At all 4 ocassions, I immediately took over control on steering and acceleration, thus avoiding any accident. This problem has not been reproduced or confirmed by a dealer or independent service center yet. My vehicle or component(s) have also not been inspected by the manufacturer, police, insurance representatives or others yet. Additionally, there were no warning lamps, messages or other symptoms of the problem prior to the failure.

NHTSA ODI 11598431

Autopilot FSD 12.3.6 in Ohio is interpreting state route signs as speed limit signs. In Milford Ohio, the speed limit is 25mph. While traveling on [XXX] each state route sign had the max speed jump to 50mph. Then back to 25 at the next actual speed limit sign. An [XXX] sign was interpreted as 20mph. Errors is speed are dangerous in either the car going too fast or risking a rear end collision by incorrectly slowing down. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11594658

I may have figured out the common link between Tesla Autopilot crashes. Distracted operators have the accelerator pressed while the TACC is engaged, thinking (for many reasons) that the vehicle will stop if there are any obstacles in front of them. However, when the accelerator is being pressed, the vehicle will not stop. It will happily run into a wall. One second before impact, the forward collision warning turns on, followed by the ABS and the slamming of the brakes, but by then it's too late for a distracted driver. The raw Tesla "Vehicle Data" on Column D, shows "Accelerator Pedal Position (%)." I strongly encourage you to take a look at the data for the autopilot crashes and review this column to see how many had the accelerator pressed until 1 second before the accident, even if the autopilot was engaged. The 4/25/24 update to Investigation EA22002 states that in 82% of the crashes, the operator did not apply the brake until <1 second prior to impact. Tesla's Director of Autopilot Software Ashok Elluswamy also made a claim that the vehicle can switch pedals if the accelerator is pressed instead of the brake, and that technology saves 40,000 crashes per year: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11590838

Following an over-the-air software update, all audio in the vehicle stops working. This includes entertainment services, but more importantly turn signal indicator "clicks", forward collision warnings, parking assist chimes, shift confirmation and warning chimes, and various ADAS notification sounds. In some instances, the problem corrected itself within 24 hours. In another instance, it persisted for nearly a week before I discovered that unplugging the USB cable for the dashcam fixed the problem. The dashcam hard drive has been installed for over 4 years, per the instructions in the user manual, without problems until early 2024. There were no error notifications or anything else to indicate that there was a problem with the car's safety systems, or what the cause of the problem was, except for the lack of audio. I chatted with Tesla service about the issue. After discovering and sharing that disconnecting the USB drive fixed the issue, they were persistent in wanting to cancel my appointment without gathering any additional information. Here is the transcript of our interaction: Me: Unplugging my dascham hard drive from the USB port fixed it. Weird. Tesla: Oh interesting. Good to know! Do we have permission to cancel this appointment? Me: Since it keeps happening I'd like to keep it open. I turned on remote debugging in case that helps you to report the bug or something. Tesla: We have nothing else to diagnose if your vehicle is operating as expected. Me: Ok. If it keeps happening I will still want to bring it in, so let's keep the appointment. And I wouldn't say it's operating as expected. Having to disconnect USB cable to get the turn signal to work properly isn't what I would expect. Tesla: I would hate for you to bring in your car, only for us to tell you that it is because of your third party accessory, and we charge you for the diagnostic time. Me: I appreciate your concern.

NHTSA ODI 11584595